What is the primary use of a rotameter?

A rotameter is a specific type of flow meter that is commonly used to measure the flow of both gases and liquids. The device consists of a tapered tube and a float, which rises or falls within the tube depending on the flow rate. As the fluid moves through the tube, the float reaches an equilibrium position that correlates with the flow rate. The position of the float can be read against a calibrated scale, allowing for direct measurement of flow.

This makes the rotameter particularly valuable in various applications where accurate flow rate data is essential, such as in industrial processes, laboratories, and environmental monitoring. Its ability to effectively provide flow measurement for both gases and liquids distinguishes it from other measurement tools, which are typically designed for more specific parameters like pressure, temperature, or pH.